kgdb: remove custom hex_to_bin()implementation

Signed-off-by: Andy Shevchenko <ext-andriy.shevchenko@nokia.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>

1 files changed, 5 insertions, 16 deletions

diff --git a/kernel/debug/gdbstub.c b/kernel/debug/gdbstub.c
index e8fd6868682d..3517fd719635 100644
--- a/kernel/debug/gdbstub.c
+++ b/kernel/debug/gdbstub.c
@@ -52,17 +52,6 @@ static unsigned long		gdb_regs[(NUMREGBYTES +
  * GDB remote protocol parser:
  */
 
-static int hex(char ch)
-{
-        if ((ch >= 'a') && (ch <= 'f'))
-                return ch - 'a' + 10;
-        if ((ch >= '0') && (ch <= '9'))
-                return ch - '0';
-        if ((ch >= 'A') && (ch <= 'F'))
-                return ch - 'A' + 10;
-        return -1;
-}
-
 #ifdef CONFIG_KGDB_KDB
 static int gdbstub_read_wait(void)
 {
@@ -123,8 +112,8 @@ static void get_packet(char *buffer)
                 buffer[count] = 0;
 
                 if (ch == '#') {
-                        xmitcsum = hex(gdbstub_read_wait()) << 4;
-                        xmitcsum += hex(gdbstub_read_wait());
+                        xmitcsum = hex_to_bin(gdbstub_read_wait()) << 4;
+                        xmitcsum += hex_to_bin(gdbstub_read_wait());
 
                         if (checksum != xmitcsum)
                                 /* failed checksum */
@@ -280,8 +269,8 @@ int kgdb_hex2mem(char *buf, char *mem, int count)
         tmp_hex = tmp_raw - 1;
         while (tmp_hex >= buf) {
                 tmp_raw--;
-                *tmp_raw = hex(*tmp_hex--);
-                *tmp_raw |= hex(*tmp_hex--) << 4;
+                *tmp_raw = hex_to_bin(*tmp_hex--);
+                *tmp_raw |= hex_to_bin(*tmp_hex--) << 4;
         }
 
         return probe_kernel_write(mem, tmp_raw, count);
@@ -304,7 +293,7 @@ int kgdb_hex2long(char **ptr, unsigned long *long_val)
                 (*ptr)++;
         }
         while (**ptr) {
-                hex_val = hex(**ptr);
+                hex_val = hex_to_bin(**ptr);
                 if (hex_val < 0)
                         break;